# GuPT - Gothenburg University RAG System
# Optimized Docker build for Hugging Face Spaces
# Uses environment.yml for dependencies

FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy environment file and install dependencies
COPY environment.yml .
# Extract pip dependencies from environment.yml and install them
RUN grep -A 100 "pip:" environment.yml | grep "    -" | sed 's/    - //' > requirements.txt && \
    pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Create non-root user for security (required by Hugging Face Spaces)
RUN useradd --create-home --shell /bin/bash --uid 1000 user
RUN chown -R user:user /app
USER user

# Set environment variables
ENV PYTHONPATH=/app
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV GRADIO_SERVER_NAME=0.0.0.0
ENV GRADIO_SERVER_PORT=7860

# Expose port 7860 (required by Hugging Face Spaces)
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
  CMD curl -f http://localhost:7860/ || exit 1

# Command to run the application
CMD ["python", "src/main.py", "--host", "0.0.0.0", "--port", "7860"]